Steam-pump.



No. 821,674. PATENTED MAY 29, 1906. I

W. H. SHAPER. STEAM PUMP.

APPLICATION FILED AUG. 10, 1905.

Fig.4.

UNITED STAWENT OFFIClii,

WILLIAM H. SHAFER, OF CINCINNATI, OHIO, ASSIGNOR TO THE AHRENS FIRE ENGINE COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

STEAM- PUMP.

Specification of Letters Patent.

Application filed August 10,1906. Serial No. 273,670.

T all whom it may concern:

Be it known that I, WILLIAM H. SHAFER, a citizen of the United States, residing at Cincinnati, Ohio, have invented a new and useful Im rovement in Steam-Pumps, of which the fol owing is a specification.

My invention relates to steam-pumps of the duplex double-acting class adapted to use in fire-engines or elsewhere; and the objects of my improvement are to provide a rigid bedplate consisting of a single castingwhereon the crank-shaft is mounted instead of on the movable drag-bars or on the columns secured thereto, whereby the usual side thrust, vibrations, and tendency to disarrange the alinement of the steam and water portions and moving parts is obviated; to secure columns or distance-pieces to the bed-plate instead of to the drag-bars that the pumping mechanism supported thereon may be maintained in erfect alinement between the dragbars; to race the drag-bars laterally with the bed-plate and to fix and maintain thereon the relative position of the columns together with the steam and water portions and reciprocating parts of the pumping mechanism; to facilitate duplication and interchangeability of arts in the manufacture by 'having all fixed oles and pointsformerly distributed among various separate piecesconcentrated into a single element, the bedplate which may be planed to gage and have all holes required to fix the alinement of parts accurately drilled and bored therein from a master-plate or jig; to rigidly support the feed-pumps in pockets formed in the bedplate by means of the same master-plate; to rigidly secure on the bed-plate the guides for the reciprocating parts and to use the bedplate as a foundation whereon the pumpingmechanism may be assembled as a complete unit, which may be transferred, attached, and connected up with the other component parts of a fire-engine more readily and more perfectly retain the alinement of parts than we been possible to do heretofore. These objects are attained in the following described manner, as illustrated in the accompanying drawings, in which 'Figure 1 is a side elevation with parts in section on the dotted line a a of Fig. 2, showing a steam-pump embodying my improvement; Fig. 2, a front elevation with arts in vertical section on the dotted line b of Fig.

1; Fig. 3, a perspective view of the bed late with portions of the columns attache and supported on the drag-bars, and Fig. 4 a corner of the bed-plate in section with a column secured therein.

In the drawings, 5 represents a steam-cylinder'provided with steam and exhaust pipes 6 and 7. Valve-chest 8 is provided with valve-stem 9, which is actuated by eccentric 11. Reciprocating frame 12, actuated by piston-rod 13, carries connecting-rod 14,

which engages and drives crank-shaft 15. It also carries plunger 16 for feed-pump l7 and plunger 18 for force-pump 19. The forcepump is provided with suction and compres sion air chambers 21 and 22. All the foregoing parts are constructed and assembled in relation to each other in substantially the ordinary manner.

. Bed-plate 23 consists of a single casting in the form of a rectangular frame or hollow prism, wherein the rectangular opening is equally divided by a central partition. extending between its front and rear walls. Top flanges 24 are formed on its opposite ends, whereby it is supported on and serves as a lateral brace between the drag-bars 25 of a fire-engine. Seats 26, formed on the partition and end walls of the bed-plate, serve to support the bearings 27, secured thereon, of the horizontal crank-shaft 15. Pockets 28 are formed in the rear portion of the bedplate, and removable feed-pumps 17 are secured therein by means of nuts 29. Adjustable guides 31 for the reciprocating frames 12 are secured to the inner side of the front portion of the bedplate.

Vertical columns or distance-bars 32 are secured through openings 83 in the bed-plate by means of nuts 34. The steam and water portions of the pumping mechanism are maintained in accurate position and alinement by being respectively secured to opposite ends of the columns.

Having fully described my improvement, What I claim as my invention, and desire to secure by Letters Patent of the United States,

1. A steam-pump having in combination with a bed-plate in the form of a rectangular frame, a series of columns secured thereto and extending therefrom in opposite direc tions parallel with each other, and steam and water portions of the pumping mechanism supported thereon adjacent to respective 0pposite sides of the bed-plate.

2. A steam-pump having in combination, a bed-plate in the form of a hollow rectangular frame, a crank-shaft mounted thereon, columns extending from the bed-plate, and steam and water portions of the pumping mechanism secured thereto and in alinement on opposite sides respectively of the bedplate.

3. A steam-pump of the designated character, having in combination, drag-bars, a bed-plate in the form of a rectangular frame removably supported thereon, parallel columns extending in opposite directions from the bed-plate and a motor and pump secured respectively on the opposite ends thereof.

4. A steam-pump of the designated character having in combination, a bed-plate in the form of a rectangular open frame, columns extending therefrom, a motor and pump secured thereto on respective opposite sides of the bed-plate, and reciprocating mechanism extending between them and movable through the opening in the bedplate.

5. A steam-pump of the designated character, having in combination wit-h drag-bars, a bed-plate in the form of a rectangular frame adapted to be supported by and between the drag-bars, a crank-shaft mounted thereon, parallel columns extending in opposite directions from the bed-plate and steam and water portions of the pumping mechanism supported in alinement thereon.

6. A steam-pump of the designated character having in combination with drag-bars, a bed-plate adapted to be exclusively sup ported thereon, said bed-plate being formed with a series of openings and with a pocket, parallel columns adapted to be removably secured within said respective openings, steam and Water portions of the pumping mechanism adapted to be exclusively supported thereby, a feed-pump adapted to be removably secured within said pocket, and a crank-shaft supported on the bed-plate.

7. A steam-pump of the designated character having in combination, a bed-plate in the form of a rectangular frame, columns projecting therefrom, reciprocating pumping mechanism supported thereby, a guide therefor adjustably secured on the bed-plate, and a feed-pump removably secured on the bedopening in the frame without contact therewith.

9. As a new article of manufacture, a rectangular bed-plate consisting of a single casting formed with supports for a crank-shaft, with a pocket wherein a feed-pump may be removably secured, with flanges on opposite sides adapted to engage with respective dragbars, and with a series of parallel openings for the insertion therethrough of columns, for the purpose specified.

10. As a new article of manufacture, a bedplate consisting of a single casting in the form of a rectangular frame having a central partition extending between its side walls and formed with a series of vertical openings wherein columns may be secured, said partition and the end walls being formed to support a crank-shaft.

WILLIAM H. SHAFER.

\Vitnesses:

ALBERT A. MoEBUs, R. S. CARE. 

